Journal ArticleDOI
Exogenous hydrogen peroxide can enhance tolerance of wheat seedlings to salt stress
Reads0
Chats0
TLDR
In this paper, the authors demonstrated that exogenous hydrogen peroxide (H2O2) was able to improve the tolerance of wheat seedlings to salt stress by decreasing the concentration of malondialdehyde (MDA), increasing the activity of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidation (APX).Abstract:
Hydrogen peroxide (H2O2), an active oxygen species, is widely generated in many biological systems and mediates various physiological and biochemical processes in plants. In this study, we demonstrated that exogenous H2O2 was able to improve the tolerance of wheat seedlings to salt stress. Treatments with exogenous H2O2 for 2 days significantly enhanced salt stress tolerance in wheat seedlings by decreasing the concentration of malondialdehyde (MDA), the production rate of superoxide radical (O2
−), and increasing the activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX), and the concentration of glutathione (GSH) and carotenoids (CAR). To further clarify the role of H2O2 in preventing salt stress damage, CAT and ascorbate (AsA), the specific H2O2 scavengers, were used. The promoting effect of exogenous H2O2 on salt stress could be reversed by the addition of CAT and AsA. It was suggested that exogenous H2O2 induced changes in MDA, O2
−, antioxidant enzymes and antioxidant compounds were responsible for the increase in salt stress tolerance observed in the experiments. Therefore, H2O2 may participate in antioxidant enzymes and antioxidant compounds induced tolerance of wheat seedlings to salt stress. The results also showed that exogenous H2O2 had a positive physiological effect on the growth and development of salt-stressed seedlings.read more
Citations
More filters
Journal ArticleDOI
Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator
Mirza Hasanuzzaman,M. H. M. Borhannuddin Bhuyan,Faisal Zulfiqar,Ali Raza,Sayed Mohammad Mohsin,Sayed Mohammad Mohsin,Jubayer Al Mahmud,Masayuki Fujita,Vasileios Fotopoulos +8 more
TL;DR: This review has documented the recent advancement illustrating the harmful effects of ROS, antioxidant defense system involved in ROS detoxification under different abiotic stresses, and molecular cross-talk with other important signal molecules such as reactive nitrogen, sulfur, and carbonyl species.
Journal ArticleDOI
Hydrogen peroxide priming modulates abiotic oxidative stress tolerance: insights from ROS detoxification and scavenging.
Mohammad Anwar Hossain,Soumen Bhattacharjee,Saed-Moucheshi Armin,Pingping Qian,Wang Xin,Hongyu Li,David J. Burritt,Masayuki Fujita,Lam-Son Phan Tran +8 more
TL;DR: Current knowledge of the possible mechanisms associated with H2O2-induced abiotic oxidative stress tolerance in plants is reviewed, with special reference to antioxidant metabolism.
Journal ArticleDOI
Exogenous jasmonic acid can enhance tolerance of wheat seedlings to salt stress.
TL;DR: It is suggested that JA could effectively protect wheat seedlings from salt stress damage by enhancing activities of antioxidant enzymes and the concentration of antioxidative compounds to quench the excessive reactive oxygen species caused by salt stress and presented a practical implication for wheat cultivation in salt-affected soils.
Journal ArticleDOI
Antioxidant responses of wheat plants under stress
TL;DR: A brief summary of antioxidant defense and hydrogen peroxide (H2O2) signaling in wheat plants is offered to alleviate oxidative damage and is an important factor contributing to stress tolerance in cereals.
Journal ArticleDOI
Application of Plant-Growth-Promoting Fungi Trichoderma longibrachiatum T6 Enhances Tolerance of Wheat to Salt Stress through Improvement of Antioxidative Defense System and Gene Expression.
TL;DR: The results indicated that the strain of T6 ameliorated the adverse effects significantly, protecting the seedlings from salt stress during their growth period, and may be due to the improvement of the antioxidative defense system and gene expression in the stressed wheat plants.
References
More filters
Journal ArticleDOI
Tissue sulfhydryl groups
TL;DR: A water-soluble (at pH 8) aromatic disulfide [5,5′-dithiobis(2-nitrobenzoic acid] has been synthesized and shown to be useful for determination of sulfhydryl groups.
Book ChapterDOI
Chlorophylls and carotenoids: Pigments of photosynthetic biomembranes
TL;DR: In this article, the spectral characteristics and absorption coefficients of chlorophylls, pheophytins, and carotenoids were analyzed using a two-beam spectrophotometer.
Journal ArticleDOI
Hydrogen Peroxide is Scavenged by Ascorbate-specific Peroxidase in Spinach Chloroplasts
Yoshiyuki Nakano,Kozi Asada +1 more
TL;DR: Observations confirm that the electron donor for the scavenging of hydrogen peroxide in chloroplasts is L-ascorbate and that the L-ASCorbate is regenerated from DHA by the system: photosystem I-*ferredoxin-*NADP^>glutathione and a preliminary characterization of the chloroplast peroxidase is given.
Journal ArticleDOI
ASCORBATE AND GLUTATHIONE: Keeping Active Oxygen Under Control
Graham Noctor,Christine H. Foyer +1 more
TL;DR: A detailed account of current knowledge of the biosynthesis, compartmentation, and transport of these two important antioxidants, with emphasis on the unique insights and advances gained by molecular exploration are provided.
Journal ArticleDOI
Superoxide Dismutases: I. Occurrence in Higher Plants
TL;DR: Nine of the enzyme activities were eliminated with cyanide treatment suggesting that they may be cupro-zinc enzymes, whereas one was cyanide-resistant and may be a manganese enzyme.